Mouthpiece



FIG. 1 is a perspective view of a mouthpiece;

FIG. 2 is a front view of the mouthpiece from FIG. 1 ;

FIG. 3 is a back view of the mouthpiece from FIG. 1 ;

FIG. 4 is a right side view of the mouthpiece from FIG. 1 ;

FIG. 5 is a left side view of the mouthpiece from FIG. 1 ;

FIG. 6 is a top view of the mouthpiece from FIG. 1 ; and,

FIG. 7 is a bottom view of the mouthpiece from FIG. 1 .

The features shown in broken lines in the drawings depict portions of the mouthpiece that form no part of the claimed design. 

CLAIM I claim the ornamental design for a mouthpiece, as shown and described. 